Compared to other stars, red dwarfs are tiny and dim. But they make up for their unimpressive stature with their amazingly long lifespans, which stretch for trillions of years. Given that the universe is a mere 13.8 billion years old, it's unsurprising that there isn't a single known red dwarf that has entered the later stages of its life.
Why They're Like This
Why It's Important
Get the basics on what stars are made of and learn about those closest to our own.
Hardcore Metal Stars
Some stars may be entirely metal—and they form in really strange ways.
Written by Curiosity Staff February 22, 2016
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